Announcement

Collapse
No announcement yet.

The Kairos and Continuum Three-Way Loudspeakers

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • The Kairos and Continuum Three-Way Loudspeakers

    I have been asked many times about making a three way version of the Kairos and the Continuum. I know several have done so with powered woofers, however, there’s a lot that can be said for a properly designed three-way when it comes to smoothness, low distortion, and proper tonal balance, as well as having the simplicity of a passive design driven by your own amplifier.

    Not only have I developed an "official" woofer module (actually two) that can be used to convert the Kairos and Continuum into three-way loudspeakers, I have made it so that it can be used to the do the same for a large number of other similar stand mounted two-ways.

    How this works is all explained in this paper that you can download in pdf format:
    https://app.box.com/s/a4bqr447s7ox7v9kt7r9tjui0h7yqkrv

    Since Meniscus will be the supplier of these parts and soon to be kits, I will try to maintain a discussion thread on their forum for discussion and questions regarding the design.
    The thread is located here:
    http://www.diyspeakerforum.com/viewtopic.php?f=2&t=509

    Enjoy,
    Jeff B.
    Last edited by Jeff B.; 11-11-2015, 04:40 PM.
    Click here for Jeff Bagby's Loudspeaker Design Software

  • #2
    Re: The Kairos and Continuum Three-Way Loudspeakers

    Wow! I already have the perfect boxes as long as the sdx will fit the cutout. I had built some active three ways with the ac130f1 and have just recently swapped in the rs28a and continuum crossover. I was using active xo for the low end with some peerless sls 10in woofers in a little under 2cuft. I think I will swap in the sdx as I really would like a true 3way.

    How much affect does a 12in baffle have on the continuum? It seemed to measure pretty flat in mine in a quick on axis, in room response?

    Comment


    • #3
      Re: The Kairos and Continuum Three-Way Loudspeakers

      Originally posted by killa View Post
      Wow! I already have the perfect boxes as long as the sdx will fit the cutout. I had built some active three ways with the ac130f1 and have just recently swapped in the rs28a and continuum crossover. I was using active xo for the low end with some peerless sls 10in woofers in a little under 2cuft. I think I will swap in the sdx as I really would like a true 3way.

      How much affect does a 12in baffle have on the continuum? It seemed to measure pretty flat in mine in a quick on axis, in room response?
      The Continuum has a(n intentional) dip in the response at around 350 Hz, a wider baffle will tend to flatten that response out some. In this case I doubt it will be much of an issue. If you build it, you must post pictures.
      Click here for Jeff Bagby's Loudspeaker Design Software

      Comment


      • #4
        Re: The Kairos and Continuum Three-Way Loudspeakers

        Well it is actually already built minus the sdx 10.I will be sure to post pics as I have just finished ordering parts :D Thanks Jeff! (not sure whether that is sarcastic or happy lol) You are quite the enabler :D.

        Also for anyone wanting to do this there is a certain place selling 10uf surplus caps (starts with Ma) that you can parallel together for those big cap values. $40 plus shipping for 100 poly caps :eek:.

        Comment


        • #5
          Re: The Kairos and Continuum Three-Way Loudspeakers

          Thank you so much for your hard work, Jeff! Trust you're healing well. May the Lord keep, strengthen and preserve you!

          I can't wait for the kits to come up on meniscus. My wallet is ready :D

          Comment


          • #6
            Re: The Kairos and Continuum Three-Way Loudspeakers

            Jeff, Really interesting read! Thanks a lot for all of your work. I know it's a long-shot but any chance of a Corian or Bamboo solution from DIY Sound Group?

            Comment


            • #7
              Re: The Kairos and Continuum Three-Way Loudspeakers

              Jeff,
              Does the polarity on the TM need to be flipped if the connections are in a bi-amped configuration?

              Comment


              • #8
                Re: The Kairos and Continuum Three-Way Loudspeakers

                Originally posted by kendomusic View Post
                Jeff,
                Does the polarity on the TM need to be flipped if the connections are in a bi-amped configuration?
                If you are using this passive crossover it does.
                Click here for Jeff Bagby's Loudspeaker Design Software

                Comment


                • #9
                  Re: The Kairos and Continuum Three-Way Loudspeakers

                  Originally posted by stook1 View Post
                  Jeff, Really interesting read! Thanks a lot for all of your work. I know it's a long-shot but any chance of a Corian or Bamboo solution from DIY Sound Group?
                  We've had no discussion on it, this was a project with Meniscus. I am sure it would be OK with everyone if Erich decided to make cabinets though. I think Corian bass units would be really expensive....
                  Click here for Jeff Bagby's Loudspeaker Design Software

                  Comment


                  • #10
                    Re: The Kairos and Continuum Three-Way Loudspeakers

                    Jeff, I mentioned this on the Meniscus forum and I will say it again....A BIG THANK YOU for your time and effort. Of course we did not bug you! :rolleyes:

                    And I join others in this exciting project. I am so fortunate that I can play with the Kairos and soon to be finished Continuum.

                    BTW the 5.1 Quarks and Paul's Voxel sub (thanks Paul), does make a killer theater with the Yamaha Aventege receiver. I am still shocked...who needs big speakers! Hahaha :D

                    Robert
                    -Robert

                    Comment


                    • #11
                      Re: The Kairos and Continuum Three-Way Loudspeakers

                      Oh boy, i planned to buy a pair of the 10" sb drivers to run active looks like i better order soon before they are backordered. Checked out the 12" but it wants a much larger ported enclosure.
                      My Build Thread's
                      Carrera's / Finalist TL's / Speedster TMM's / Speedster MTM Center / Overnight Sensation Surrounds

                      Comment


                      • #12
                        Re: The Kairos and Continuum Three-Way Loudspeakers

                        This is great Jeff, thanks! I may have to hold off on painting the Kairos to incorporate this instead.

                        Comment


                        • #13
                          Re: The Kairos and Continuum Three-Way Loudspeakers

                          Jeff:
                          That is great, so glad to read your excellent write-up on it. I've wanted to do something similar but don't have the expertise or knowledge to do so. Would it be possible to use an L-pad to adjust the woofer to match different bookshelf speakers? It would be nice to swap speakers then just adjust either by ear or with the Imm-6 and AudioTool app.

                          Thanks for your hard work and dedication to the hobby.

                          Eric

                          Eric

                          Comment


                          • #14
                            Re: The Kairos and Continuum Three-Way Loudspeakers

                            Originally posted by IBM5150 View Post
                            Jeff:
                            That is great, so glad to read your excellent write-up on it. I've wanted to do something similar but don't have the expertise or knowledge to do so. Would it be possible to use an L-pad to adjust the woofer to match different bookshelf speakers? It would be nice to swap speakers then just adjust either by ear or with the Imm-6 and AudioTool app.

                            Thanks for your hard work and dedication to the hobby.

                            Eric

                            Eric
                            No. Never use an L pad on a woofer. It will significantly change the electrical damping (Qes) with terrible results.
                            Click here for Jeff Bagby's Loudspeaker Design Software

                            Comment


                            • #15
                              Re: The Kairos and Continuum Three-Way Loudspeakers

                              Originally posted by Jeff B. View Post
                              No. Never use an L pad on a woofer. It will significantly change the electrical damping (Qes) with terrible results.
                              OK - clears that up, thanks Jeff!

                              Eric

                              Comment

                              Working...
                              X